| Pouring with tobacco liquor is fatal to these insects, and also to the ked, Hippobosca ovina, and to the tick, Acarus reduvius, if it fairly reach them. |
| It has not been demonstrated that the acarus so common in flour has had any injurious effect when eaten. |
| The acarus Scabiei causes itch, but fortunately it is rare in America. |
| A parasite known as the acarus folliculorum infests the sebaceous glands. |
| Scabs of any thickness may form, but the special features are the intense itching and the presence of the acarus. |
| The acarus autumnalis, or mower's mite, has been found in the skin of this part, and it is capable of causing great distress. |
